British pianist/vocalist Jamie Cullum mixes jazz with melodic pop and rock into a crossover style that calls to mind such artists as Harry Connick, Jr., and Norah Jones. In that vein, Cullum will just as often cover a swinging jazz standard as a modern rock song, and his original compositions deftly move from earnest ballads to songs of sardonic wit. Having played guitar and piano since age eight, Cullum developed an avid interest in jazz passed down from his older brother Ben. Inspired by such...